. >> maureen bunyan is joining us. >>> the world's biggest airline -- the new merger was approved today. we will have the latest. a plot against the pope? six men are in custody in london. the potential threat they may have posed. those stories are coming up at 6:00. >>> a check on the weather. tonight is another great night. with dougheck in hill. >> it looks like a could be a great weekend. anything this weekend -- clear skies during the day and at night. the satellite is looking down at southern mexico. it does not give us a lot of detail. south of mexico city, hurricane karl. the top winds are below 90 miles per hour. the big story will be the flooding. we have heard that it will make headlines over the weekend as up to 10 to 14 inches of rain might fall in the mountainous areas before it moves back over the pacific. we're sitting pretty here. all afternoon long, nothing but cloud cover there on the horizon. those have been overhead most of the day. we have clear sailing all across the area for the evening. it is a little bit cool. 75 in rockville. 75 in upper marlboro. 76 degrees i